Ventilator



Oct. 2, 1951 w, H, PQRTER 2,569,689

' VENTILATOR Filed April 29, 194e WILL/AM H PORTER Na.' @www A TT ORNE Y Patented Oct. 2, 1951 OFFICE vEN'rmAron Willamn. Porter, L Jolla. cam. Application 'April 29, 1946, Serial No. 665,861

My invention relates to a ventilator, more particularly for use in building walls for ventilating building rooms, and the objects of my invention are:

First, to provide a ventilator of this class which" is arranged to ventilata a building room independently of the window structure thereof;

Second, to provide a ventilator of this class which may be placed in exterior walls of buildings below the windows thereof for properly Ventilating rooms independently of the windows thereof;

Third, to provide a ventilator of this class in which spaced, flexible sheets are movably supported in the wall structure of a buildingV room and are provided with perforate portions and closed portions providing an optional dead air space or a dou-ble Ventilating screen;

Fourth, to provide a ventilator of this class which is particularly adapted for use in combina-` tion with double window pane structure wherein a dead air space is provided intermediate the window panes and a pair of spaced movablesheets provide optional dead air space or perforate.

screens;

Fifth, to provide a ventilator of this class which may be installed in conventional building wall structure;

Sixth, to provide a ventilator of this class which is particularly adapted for use in cold climates; and

Seventh, to provide a ventilator of this class which is very simple and economical of construction, efcient in operation, and which will no readily deteriorate or get out of order. i

With these and other objects in view as will appear hereinafter, my invention consists of certain novel features of construction, combination and arrangement of parts and portions, as will be hereinafter described in detail and particularly set forth in the appended claims, reference being had to the accompanying drawings and to the characters of reference thereon, forming a part of this application in which:

Figure 1 is a fragmentary side elevational view of my ventilator; Fig. 2 is a vertical sectional view thereof, showing portions broken away and in section; and Fig. 3 is a fragmentary sectional view taken from the line 3-3 of Fig. 2.

Similar characters of reference refer to similar parts and portions throughout the several views of the drawings.

The Window panes I, sill sheets 4, rollers 2, mullion 3, flexible 5, 6 and 1, operating rollers I 3` Claims. (Cl. 160-121) `spaced relation to each other.

2 and 9. belt I0, and the louvers I I constitute the principal parts and portions of my ventilator.

The window panes I are positioned in spaced relation to each other providing an air space ldiere-between and are supported on the sill 2.

Positioned beneath the sill 2 and revolubly mounted thereunder is the roller 5 having the two flexible sheets 4 wound thereon. Opposite ends of these flexible sheets 4 are wound on the rollers 6 and 'I which are conventional spring loaded rollers. The operating roller 9 is secured in connection with the spring loader roller 5 and the belt I0 is positioned thereover and engages the operating roller 8 revolubly mounted at the inner side of the window sill providing a manual operating roller for turning the roller 5 and winding the flexible sheets 4 thereon. The louvers I I are substantially V-shaped in cross section, as shown in Fig. 2 of the drawings, and the l:Flexible sheets 4 pass through slotted portions Illa therein, arranged in spaced relation to each other for maintaining the ilexible sheets 4 in parallel The louvers II are arranged in inverted V-shaped cross sectional relation to each other, providing a rain and Vweather shield for the flexible sheets 4. It will be noted that these flexible sheets 4 are each provided with a solid portion 4a and a perforate portion 4b adjoining on a substantially horizontal plane. These flexible sheets 4 are of sufficient length so that half the sheet is formed by the perforate portion 4b and the other half is formed by the solid portion 4a permitting the use of the perforate portion coextensive with the louvers Il for the provision of ventilation or the use of the solid portion 4a, coextensive with the louvers II for the purpose of insulation. When used for the purpose of insulation, a dead air space is maintained intermediate the flexible sheets 4. Opposite edges 4c of the flexible sheets 4 are vertically movable in slotted portions 3a in the mullion 3, as shown best in Fig. 3 of the drawings.

The operation of my ventilator is substantially as follows:

When it is desired to shift the flexible sheets 4, the belt IIJ on the operating roller 8 is manually engaged and the roller 9 in connection with the roller 5 rotates therewith. The sheets 4 are wound on the roller 5 or unwound therefrom according to the direction of operation of the belt Il) on the operating roller 8. When the sheets 4 are unwound from the roller 5, thespring loaded rollers 6 and 'I wind the sheets 4 thereon. When the operating roller 8 is operated in the opposite direction the flexible sheets 4 are wound theappended claims.v

supportingsaid-second flexible sheet.

upon the roller and off from the rollers 6 and 1. It will be noted that these flexible sheets are equal in length to twice the distance from the roller 6 to the roller 5 and that the entire'area occupied by the louvers I I may be covered by the enclosed portion 4a of the exible sheets Il or may be covered by the perforate portions 4b of these flexible sheets 4, providing either` a dead air space between the flexible sheets 4 or a double ventilationl screen as desired"`The window panes I, in spaced relation to each other, maintain a dead air space therebetween for insulation pury poses.

Though I have shown and described a particuf Y lar construction, combination and arrangement' 4 ranged in downwardly and outwardly disposed relation from said flexible sheet, a second flexible sheet in spaced relation to the {rst mentioned flexible sheet and extending throughY said louvers substantially contiguous, and second roller means supporting said second exible sheet, and rotary means laterally of said flexible sheets for rotating one of said rollers.

3. In a ventilator of the class described, the

.combinati'oiof afexibl'e' sheet havinga perforate portion 'and af solid portion, rollers in spaced relation to each other, supporting opposite ends of said sheet, one of saidrollers spring loaded,

of parts and portions, I do not wish to. be/l'imited a to the particular construction,combination, and

arrangement, but desire to include in'the'scope and arrangement substantially as set forth in Having thus described my invention, whatv I claim as newV and desire .to secure by Letters Patent is: v

1.. Ina ventilator of the class described, the combination of a pair of rollers, a flexible sheet wounde on- -said Y rollers and. extending therebetween, provided with a `perforate portionjand' a solid.A portion; louvers substantially, contiguous at opposite sides of said iiexible sheet, ,throughY which said flexiblersheet extends, said Ylouvers substantially V-shaped in cross section and arranged indownwardly and outwardly' disposed relation frornrsaid flexiblesheet, .a second flexible sheet Vin spaced-relation Ato ,the first. mentioned ,l

flexibleV sheet and extending through, said louvers substantially contiguous, and second roller means 2.. In ay ventilator of the class described, the combination of a pair of rollers, ailexible sheet -wound on saidr rollers and extendingptherebetween, provided with a perforate portionand a solid portiony louvers substantiallycontiguous at opposite sides of :said flexiblev sheet, through which said flexible sheet extends, said louvers substantially V-shaped in cross ,section and ar- 4of my' invention, the construction, combination..

. and substantially horizontal louver members of invertedV-shaped cross section and vertically `spaced.relative to each other substantially contiguous with opposite sides of said sheet, a second solid portion in spaced relation to said first mentioned flexible sheet and extending through said ,louvers substantially "contiguous thereto, said second mentioned sheet at one end wound onl one of said rollers contiguous with said rst mentioned'sheet, a separate spring loaded roller arranged to. support the opposite end of said second mentioned flexible sheet. Y

Y l WILLIAM H; PORTER.

REFERENCESCITED Y Thegfollow-ing,references are of record in the flle of this patent:

UNITEDv VSTATES `PATENTS n Number.V Name n Date, Y 59,553. Cabell Nov, 13, 1866 481,937, Egry, ,Sept. 6, 1892 507,520 Amos Oct. 24, 1893 797,652 Wilson Aug. 22, 1905 1,529,573 Chappell Man 10.1925 1,691,162.. Miller,- Nov. 13, 1928 2,082,406A lLloydV June 1,1937 2,140,049l Gravel Dec, 13, 1938 2,170,877, imon Aug. 29, 1939 2,320,268VV Cramer May 25, V19473 Butts- 1 Aug, 31, 1943 

